White vans are also increasingly being targeted with thieves smashing windows to steal workman tools and sat navs left in glove boxes.

Inspector Karen Winfield warned drivers they may not be able to claim on their insurance policy if they leave their vehicles unlocked and consequently have items taken.

She said: “Thieves will without hesitation casually try door handles as they walk down a road, as they are aware they will eventually come across at least one vehicle left unlocked with valuables left inside.”